A Global Positioning System (GPS) receiver includes multiple correlation segments that can operate in parallel. Each correlation segment has a separate set of accumulators associated with it, embodied in random access memory (RAM). In each of the correlation segments, correlation data associated with...http://www.google.com.tw/patents/US6298083?utm_source=gb-gplus-share專利 US6298083 - Power savings technique for a positioning system receiver
